#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;
using Utilities.Miscellaneous;

namespace Utilities.Web.UI.Controls
{
  public class DateValidator : BaseRegularExpressionValidator
  {
    protected override void OnInit(EventArgs e)
    {
      base.OnInit(e);

      ValidationExpression = ValidationUtils.DateRegex;
    }

    protected override bool EvaluateIsValid()
    {
      bool isValid = base.EvaluateIsValid();

      if (!isValid)
      {
        return isValid;
      }
      else
      {
        // double check by parsing input in .NET
        string input = GetControlValidationValue(ControlToValidate);

        DateTime result;
        return DateTime.TryParse(input, out result);
      }
    }
  }
}